Pixels to CM Converter — What 200×230 px, 140×60 px or 3.5×4.5 cm Means
Forms give photo sizes in pixels (200 × 230 px), centimetres (3.5 × 4.5 cm) or both, and the two only line up at a particular DPI. Type a size and a DPI to see the other unit, or tap a common form size. Nothing is uploaded — this is a calculator.
Pixels and centimetres are linked by DPI (dots per inch): cm = pixels ÷ DPI × 2.54. So 200 × 230 pixels is 1.69 × 1.95 cm at 300 DPI, 2.54 × 2.92 cm at 200 DPI, or 7.06 × 8.11 cm at 72 DPI. Going the other way, 3.5 × 4.5 cm is 413 × 531 pixels at 300 DPI and 276 × 354 at 200 DPI.
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UnitDPI
200 × 230 px = 1.69 × 1.95 cm at 300 DPI
= 16.9 × 19.5 mm · 0.67 × 0.77 in · ratio 0.87 : 1
At 72 DPI the same 200 × 230 px prints 7.1 × 8.1 cm; at 300 DPI 1.7 × 1.9 cm. Pixels are fixed; the DPI only decides how big they print.
Common form sizes
Size
At 72 DPI
At 200 DPI
At 300 DPI
3.5 × 4.5 cm (passport, India)
99 × 128 px
276 × 354 px
413 × 531 px
2 × 2 in (US passport)
144 × 144 px
400 × 400 px
600 × 600 px
6 × 2 cm (SSC signature)
170 × 57 px
472 × 157 px
709 × 236 px
3.5 × 2.5 cm (PAN photo)
99 × 71 px
276 × 197 px
413 × 295 px
3 × 3 cm (thumb)
85 × 85 px
236 × 236 px
354 × 354 px
10 × 5 cm (declaration)
283 × 142 px
787 × 394 px
1181 × 591 px
Pixel sizes of common form photos at the DPI the form uses.
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Example
What the result looks like
Example image converted to JPG, 900×1200 px, 22.9 KB.
Before and after: an original image and the same image made to JPG (22.9 KB) with Pixels to CM ConverterPixels to CM Converter size guide: target JPG, JPG
How to pixels to cm converter
Pick the direction: pixels → cm, or cm → pixels.
Type the width and height, choose cm, mm or inches, and set the DPI (300 for photos, 200 for most scans).
Read the result — it also shows the value at 72, 150, 200 and 300 DPI.
Tap a common form size to fill it in, then open the resizer for that form.
What you can use it for
Finding out what a form's pixel size means in centimetres
Working out the pixels for a 3.5 × 4.5 cm or 2 × 2 inch photo
Checking whether a scan at 200 or 300 DPI gives enough pixels
Reading the print size of an image from its pixels and DPI
Why use FlowVid Tools
Instant, exact arithmetic — no rounding surprises.
Completely free and unlimited — no daily cap, no watermark, no sign-up.
Nothing to upload, so nothing is stored.
FAQ
Frequently asked questions
01
What does 200 × 230 pixels mean?
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It's the image's width and height in pixels — 200 across, 230 down, a portrait shape of ratio 0.87 : 1. In centimetres it depends on the DPI: 1.69 × 1.95 cm at 300 DPI, 2.54 × 2.92 cm at 200 DPI. Bank forms (IBPS, SBI) describe it as a 4.5 × 3.5 cm passport photo at about 130 DPI.
02
What is 3.5 × 4.5 cm in pixels?
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413 × 531 pixels at 300 DPI (the usual photo-print density), 276 × 354 at 200 DPI, or 99 × 128 at 72 DPI. If a form gives only centimetres, 300 DPI is the safe choice — the resizers on this site use it.
03
What is 140 × 60 pixels in cm?
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1.19 × 0.51 cm at 300 DPI, or 1.78 × 0.76 cm at 200 DPI. It's the signature box most bank and insurance forms use (10–20 KB). The signature resizer makes exactly 140 × 60 px.
04
Does changing DPI change the pixels?
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No. DPI is only a number stored in the file that says how large the pixels should print. Changing it from 72 to 300 leaves a 413 × 531 px image at 413 × 531 px — it just prints smaller. To change the pixels you have to resize the image; to change the stored DPI use the DPI converter.
05
Which DPI should I use for an exam photo?
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If the form states a DPI, use it (PAN says 200, DSSSB says 96). If it gives only centimetres, use 300 DPI — the pixels will comfortably exceed what the portal needs and the file-size limit is met by compression, not by lowering the DPI.
